2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2004 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
16 * All rights reserved.
18 /* This notice applies to changes, created by or for Novell, Inc.,
19 * to preexisting works for which notices appear elsewhere in this file.
21 * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
23 * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
24 * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
25 * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
26 * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
27 * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
28 * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
29 * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
30 * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
32 * Modification to OpenLDAP source by Novell, Inc.
33 * April 2000 sfs Added code to chase V3 referrals
34 * request.c - sending of ldap requests; handling of referrals
36 * Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
37 * can be found in the file "build/LICENSE-2.0.1" in this distribution
38 * of OpenLDAP Software.
45 #include <ac/stdlib.h>
48 #include <ac/socket.h>
49 #include <ac/string.h>
51 #include <ac/unistd.h>
56 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPURLDesc *srv, int any ));
57 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
60 re_encode_request( LDAP *ld,
68 ldap_alloc_ber_with_options( LDAP *ld )
72 if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULL ) {
73 ld->ld_errno = LDAP_NO_MEMORY;
81 ldap_set_ber_options( LDAP *ld, BerElement *ber )
83 ber->ber_options = ld->ld_lberoptions;
88 ldap_send_initial_request(
99 LDAP_LOG ( OPERATION, ENTRY, "ldap_send_initial_request\n", 0, 0, 0 );
101 Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
104 if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, NULL ) == -1 ) {
105 /* not connected yet */
106 int rc = ldap_open_defconn( ld );
114 LDAP_LOG ( OPERATION, DETAIL1,
115 "ldap_send_initial_request: ldap_open_defconn: successful\n" ,
118 Debug( LDAP_DEBUG_TRACE,
119 "ldap_open_defconn: successful\n",
126 * use of DNS is turned off or this is an X.500 DN...
127 * use our default connection
132 #ifdef LDAP_CONNECTIONLESS
133 if (LDAP_IS_UDP(ld)) {
134 if (msgtype == LDAP_REQ_BIND) {
135 if (ld->ld_options.ldo_cldapdn)
136 ldap_memfree(ld->ld_options.ldo_cldapdn);
137 ld->ld_options.ldo_cldapdn = ldap_strdup(dn);
140 if (msgtype != LDAP_REQ_ABANDON && msgtype != LDAP_REQ_SEARCH)
141 return LDAP_PARAM_ERROR;
144 #ifdef LDAP_R_COMPILE
145 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
147 rc = ldap_send_server_request( ld, ber, msgid, NULL,
148 servers, NULL, NULL );
149 #ifdef LDAP_R_COMPILE
150 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
153 ldap_free_urllist(servers);
159 ldap_int_flush_request(
163 LDAPConn *lc = lr->lr_conn;
165 if ( ber_flush( lc->lconn_sb, lr->lr_ber, 0 ) != 0 ) {
166 if ( errno == EAGAIN ) {
167 /* need to continue write later */
168 lr->lr_status = LDAP_REQST_WRITING;
169 ldap_mark_select_write( ld, lc->lconn_sb );
170 ld->ld_errno = LDAP_BUSY;
173 ld->ld_errno = LDAP_SERVER_DOWN;
174 ldap_free_request( ld, lr );
175 ldap_free_connection( ld, lc, 0, 0 );
179 if ( lr->lr_parent == NULL ) {
180 lr->lr_ber->ber_end = lr->lr_ber->ber_ptr;
181 lr->lr_ber->ber_ptr = lr->lr_ber->ber_buf;
183 lr->lr_status = LDAP_REQST_INPROGRESS;
185 /* sent -- waiting for a response */
186 ldap_mark_select_read( ld, lc->lconn_sb );
192 ldap_send_server_request(
196 LDAPRequest *parentreq,
197 LDAPURLDesc *srvlist,
205 LDAP_LOG ( OPERATION, ENTRY, "ldap_send_server_request\n", 0, 0, 0 );
207 Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
211 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
214 if ( srvlist == NULL ) {
217 if (( lc = find_connection( ld, srvlist, 1 )) ==
219 if ( (bind != NULL) && (parentreq != NULL) ) {
220 /* Remember the bind in the parent */
222 ++parentreq->lr_outrefcnt;
224 lc = ldap_new_connection( ld, srvlist, 0, 1, bind );
229 if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
231 if ( ld->ld_errno == LDAP_SUCCESS ) {
232 ld->ld_errno = LDAP_SERVER_DOWN;
235 /* Forget about the bind */
236 --parentreq->lr_outrefcnt;
241 use_connection( ld, lc );
243 /* If we still have an incomplete write, try to finish it before
244 * dealing with the new request. If we don't finish here, return
245 * LDAP_BUSY and let the caller retry later. We only allow a single
246 * request to be in WRITING state.
249 if ( ld->ld_requests &&
250 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
251 ldap_int_flush_request( ld, ld->ld_requests ) < 0 ) {
256 if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
258 ld->ld_errno = LDAP_NO_MEMORY;
259 ldap_free_connection( ld, lc, 0, 0 );
262 /* Forget about the bind */
263 --parentreq->lr_outrefcnt;
267 lr->lr_msgid = msgid;
268 lr->lr_status = LDAP_REQST_INPROGRESS;
269 lr->lr_res_errno = LDAP_SUCCESS; /* optimistic */
272 if ( parentreq != NULL ) { /* sub-request */
274 /* Increment if we didn't do it before the bind */
275 ++parentreq->lr_outrefcnt;
277 lr->lr_origid = parentreq->lr_origid;
278 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
279 lr->lr_parent = parentreq;
280 lr->lr_refnext = parentreq->lr_child;
281 parentreq->lr_child = lr;
282 } else { /* original request */
283 lr->lr_origid = lr->lr_msgid;
286 if (( lr->lr_next = ld->ld_requests ) != NULL ) {
287 lr->lr_next->lr_prev = lr;
289 ld->ld_requests = lr;
292 ld->ld_errno = LDAP_SUCCESS;
293 if ( ldap_int_flush_request( ld, lr ) == -1 ) {
301 ldap_new_connection( LDAP *ld, LDAPURLDesc *srvlist, int use_ldsb,
302 int connect, LDAPreqinfo *bind )
309 LDAP_LOG ( OPERATION, ENTRY, "ldap_new_connection\n", 0, 0, 0 );
311 Debug( LDAP_DEBUG_TRACE, "ldap_new_connection\n", 0, 0, 0 );
314 * make a new LDAP server connection
315 * XXX open connection synchronously for now
317 if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
318 ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
320 LDAP_FREE( (char *)lc );
322 ld->ld_errno = LDAP_NO_MEMORY;
326 lc->lconn_sb = ( use_ldsb ) ? ld->ld_sb : sb;
329 for ( srv = srvlist; srv != NULL; srv = srv->lud_next ) {
330 if ( ldap_int_open_connection( ld, lc, srv, 0 ) != -1 ) {
337 ber_sockbuf_free( lc->lconn_sb );
339 LDAP_FREE( (char *)lc );
340 ld->ld_errno = LDAP_SERVER_DOWN;
344 lc->lconn_server = ldap_url_dup(srv);
347 lc->lconn_status = LDAP_CONNST_CONNECTED;
348 lc->lconn_next = ld->ld_conns;
352 * XXX for now, we always do a synchronous bind. This will have
353 * to change in the long run...
357 LDAPConn *savedefconn;
359 /* Set flag to prevent additional referrals from being processed on this
360 * connection until the bind has completed
362 lc->lconn_rebind_inprogress = 1;
363 /* V3 rebind function */
364 if ( ld->ld_rebind_proc != NULL) {
365 LDAPURLDesc *srvfunc;
366 if( ( srvfunc = ldap_url_dup( srvlist)) == NULL) {
367 ld->ld_errno = LDAP_NO_MEMORY;
370 savedefconn = ld->ld_defconn;
371 ++lc->lconn_refcnt; /* avoid premature free */
375 LDAP_LOG ( OPERATION, DETAIL1,
376 "ldap_new_connection: Call application rebind_proc\n",
379 Debug( LDAP_DEBUG_TRACE, "Call application rebind_proc\n", 0, 0, 0);
381 #ifdef LDAP_R_COMPILE
382 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
383 ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
385 err = (*ld->ld_rebind_proc)( ld,
386 bind->ri_url, bind->ri_request, bind->ri_msgid,
387 ld->ld_rebind_params );
388 #ifdef LDAP_R_COMPILE
389 ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
390 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
393 ld->ld_defconn = savedefconn;
398 ldap_free_connection( ld, lc, 1, 0 );
401 ldap_free_urldesc( srvfunc);
404 savedefconn = ld->ld_defconn;
405 ++lc->lconn_refcnt; /* avoid premature free */
409 LDAP_LOG ( OPERATION, DETAIL1,
410 "ldap_new_connection: anonymous rebind via ldap_bind_s\n",
413 Debug( LDAP_DEBUG_TRACE, "anonymous rebind via ldap_bind_s\n", 0, 0, 0);
415 #ifdef LDAP_R_COMPILE
416 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
417 ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
419 if ( ldap_bind_s( ld, "", "", LDAP_AUTH_SIMPLE ) != LDAP_SUCCESS ) {
422 #ifdef LDAP_R_COMPILE
423 ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
424 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
426 ld->ld_defconn = savedefconn;
430 ldap_free_connection( ld, lc, 1, 0 );
435 lc->lconn_rebind_inprogress = 0;
443 find_connection( LDAP *ld, LDAPURLDesc *srv, int any )
445 * return an existing connection (if any) to the server srv
446 * if "any" is non-zero, check for any server in the "srv" chain
450 LDAPURLDesc *lcu, *lsu;
451 int lcu_port, lsu_port;
453 for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
454 lcu = lc->lconn_server;
455 lcu_port = lcu->lud_port ? lcu->lud_port : LDAP_PORT;
456 for ( lsu = srv; lsu != NULL; lsu = lsu->lud_next ) {
457 lsu_port = lsu->lud_port ? lsu->lud_port : LDAP_PORT;
458 if ( lcu->lud_host != NULL && *lcu->lud_host != '\0'
459 && lsu->lud_host != NULL && *lsu->lud_host != '\0'
460 && strcasecmp( lsu->lud_host, lcu->lud_host ) == 0
461 && lsu_port == lcu_port ) {
475 use_connection( LDAP *ld, LDAPConn *lc )
478 lc->lconn_lastused = time( NULL );
483 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
485 LDAPConn *tmplc, *prevlc;
488 LDAP_LOG ( OPERATION, ENTRY, "ldap_free_connection\n", 0, 0, 0 );
490 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
493 if ( force || --lc->lconn_refcnt <= 0 ) {
494 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
495 ldap_mark_select_clear( ld, lc->lconn_sb );
497 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
501 if( lc->lconn_ber != NULL ) {
502 ber_free( lc->lconn_ber, 1 );
505 ldap_int_sasl_close( ld, lc );
508 for ( tmplc = ld->ld_conns; tmplc != NULL;
509 tmplc = tmplc->lconn_next ) {
511 if ( prevlc == NULL ) {
512 ld->ld_conns = tmplc->lconn_next;
514 prevlc->lconn_next = tmplc->lconn_next;
520 ldap_free_urllist( lc->lconn_server );
521 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
522 if ( lc->lconn_krbinstance != NULL ) {
523 LDAP_FREE( lc->lconn_krbinstance );
526 if ( lc->lconn_sb != ld->ld_sb ) {
527 ber_sockbuf_free( lc->lconn_sb );
529 if( lc->lconn_rebind_queue != NULL) {
531 for( i = 0; lc->lconn_rebind_queue[i] != NULL; i++) {
532 LDAP_VFREE(lc->lconn_rebind_queue[i]);
534 LDAP_FREE( lc->lconn_rebind_queue);
538 LDAP_LOG ( OPERATION, RESULTS,
539 "ldap_free_connection: actually freed\n", 0, 0, 0 );
541 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
545 lc->lconn_lastused = time( NULL );
547 LDAP_LOG ( OPERATION, RESULTS, "ldap_free_connection: refcnt %d\n",
548 lc->lconn_refcnt, 0, 0 );
550 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
551 lc->lconn_refcnt, 0, 0 );
559 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
564 fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
565 for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
566 if ( lc->lconn_server != NULL ) {
567 fprintf( stderr, "* host: %s port: %d%s\n",
568 ( lc->lconn_server->lud_host == NULL ) ? "(null)"
569 : lc->lconn_server->lud_host,
570 lc->lconn_server->lud_port, ( lc->lconn_sb ==
571 ld->ld_sb ) ? " (default)" : "" );
573 fprintf( stderr, " refcnt: %d status: %s\n", lc->lconn_refcnt,
574 ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
575 "NeedSocket" : ( lc->lconn_status ==
576 LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
577 fprintf( stderr, " last used: %s",
578 ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
579 if( lc->lconn_rebind_inprogress ) {
580 fprintf( stderr, " rebind in progress\n");
581 if( lc->lconn_rebind_queue != NULL) {
583 for( ;lc->lconn_rebind_queue[i] != NULL; i++) {
585 for( ;lc->lconn_rebind_queue[i][j] != 0; j++) {
586 fprintf( stderr, " queue %d entry %d - %s\n",
587 i, j, lc->lconn_rebind_queue[i][j]);
591 fprintf( stderr, " queue is empty\n");
594 fprintf(stderr, "\n");
603 ldap_dump_requests_and_responses( LDAP *ld )
608 #ifdef LDAP_R_COMPILE
609 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
611 fprintf( stderr, "** Outstanding Requests:\n" );
612 if (( lr = ld->ld_requests ) == NULL ) {
613 fprintf( stderr, " Empty\n" );
615 for ( ; lr != NULL; lr = lr->lr_next ) {
616 fprintf( stderr, " * msgid %d, origid %d, status %s\n",
617 lr->lr_msgid, lr->lr_origid,
618 ( lr->lr_status == LDAP_REQST_INPROGRESS ) ? "InProgress" :
619 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
620 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
621 ( lr->lr_status == LDAP_REQST_WRITING) ? "Writing" :
622 ( lr->lr_status == LDAP_REQST_COMPLETED ? "Request Completed" : "Invalid Status"));
623 fprintf( stderr, " outstanding referrals %d, parent count %d\n",
624 lr->lr_outrefcnt, lr->lr_parentcnt );
626 #ifdef LDAP_R_COMPILE
627 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
629 fprintf( stderr, "** Response Queue:\n" );
630 if (( lm = ld->ld_responses ) == NULL ) {
631 fprintf( stderr, " Empty\n" );
633 for ( ; lm != NULL; lm = lm->lm_next ) {
634 fprintf( stderr, " * msgid %d, type %lu\n",
635 lm->lm_msgid, (unsigned long) lm->lm_msgtype );
636 if (( l = lm->lm_chain ) != NULL ) {
637 fprintf( stderr, " chained responses:\n" );
638 for ( ; l != NULL; l = l->lm_chain ) {
640 " * msgid %d, type %lu\n",
642 (unsigned long) l->lm_msgtype );
647 #endif /* LDAP_DEBUG */
650 ldap_free_request_int( LDAP *ld, LDAPRequest *lr )
652 if ( lr->lr_prev == NULL ) {
653 ld->ld_requests = lr->lr_next;
655 lr->lr_prev->lr_next = lr->lr_next;
658 if ( lr->lr_next != NULL ) {
659 lr->lr_next->lr_prev = lr->lr_prev;
662 if ( lr->lr_ber != NULL ) {
663 ber_free( lr->lr_ber, 1 );
666 if ( lr->lr_res_error != NULL ) {
667 LDAP_FREE( lr->lr_res_error );
670 if ( lr->lr_res_matched != NULL ) {
671 LDAP_FREE( lr->lr_res_matched );
678 ldap_free_request( LDAP *ld, LDAPRequest *lr )
680 LDAPRequest **ttmplr;
683 LDAP_LOG ( OPERATION, ARGS, "ldap_free_request (origid %d, msgid %d)\n",
684 lr->lr_origid, lr->lr_msgid, 0 );
686 Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
687 lr->lr_origid, lr->lr_msgid, 0 );
690 /* free all referrals (child requests) */
691 while ( lr->lr_child )
692 ldap_free_request( ld, lr->lr_child );
694 if ( lr->lr_parent != NULL ) {
695 --lr->lr_parent->lr_outrefcnt;
696 for ( ttmplr = &lr->lr_parent->lr_child; *ttmplr && *ttmplr != lr; ttmplr = &(*ttmplr)->lr_refnext );
698 *ttmplr = lr->lr_refnext;
700 ldap_free_request_int( ld, lr );
708 * (IN) ld = LDAP connection handle
709 * (IN) lr = LDAP Request structure
710 * (IN) refs = array of pointers to referral strings that we will chase
711 * The array will be free'd by this function when no longer needed
712 * (IN) sref != 0 if following search reference
713 * (OUT) errstrp = Place to return a string of referrals which could not be followed
714 * (OUT) hadrefp = 1 if sucessfully followed referral
716 * Return value - number of referrals followed
719 ldap_chase_v3referrals( LDAP *ld, LDAPRequest *lr, char **refs, int sref, char **errstrp, int *hadrefp )
722 int unfollowedcnt = 0;
723 LDAPRequest *origreq;
724 LDAPURLDesc *srv = NULL;
726 char **refarray = NULL;
728 int rc, count, i, j, id;
731 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
735 LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_v3referrals\n", 0, 0, 0 );
737 Debug( LDAP_DEBUG_TRACE, "ldap_chase_v3referrals\n", 0, 0, 0 );
743 /* If no referrals in array, return */
744 if ( (refs == NULL) || ( (refs)[0] == NULL) ) {
749 /* Check for hop limit exceeded */
750 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
752 LDAP_LOG ( OPERATION, DETAIL1,
753 "ldap_chase_v3referrals: more than %d referral hops (dropping)\n",
754 ld->ld_refhoplimit, 0, 0 );
756 Debug( LDAP_DEBUG_ANY,
757 "more than %d referral hops (dropping)\n", ld->ld_refhoplimit, 0, 0 );
759 ld->ld_errno = LDAP_REFERRAL_LIMIT_EXCEEDED;
764 /* find original request */
766 origreq->lr_parent != NULL;
767 origreq = origreq->lr_parent )
774 /* parse out & follow referrals */
775 for( i=0; refarray[i] != NULL; i++) {
776 /* Parse the referral URL */
777 if (( rc = ldap_url_parse_ext( refarray[i], &srv)) != LDAP_SUCCESS) {
783 if( srv->lud_crit_exts ) {
784 /* we do not support any extensions */
785 ld->ld_errno = LDAP_NOT_SUPPORTED;
790 /* treat ldap://hostpart and ldap://hostpart/ the same */
791 if ( srv->lud_dn && srv->lud_dn[0] == '\0' ) {
792 LDAP_FREE( srv->lud_dn );
796 /* check connection for re-bind in progress */
797 if (( lc = find_connection( ld, srv, 1 )) != NULL ) {
798 if( lc->lconn_rebind_inprogress) {
799 /* We are already chasing a referral or search reference and a
800 * bind on that connection is in progress. We must queue
801 * referrals on that connection, so we don't get a request
802 * going out before the bind operation completes. This happens
803 * if two search references come in one behind the other
804 * for the same server with different contexts.
807 LDAP_LOG ( OPERATION, DETAIL1,
808 "ldap_chase_v3referrals: queue referral \"%s\"\n",
811 Debug( LDAP_DEBUG_TRACE,
812 "ldap_chase_v3referrals: queue referral \"%s\"\n",
815 if( lc->lconn_rebind_queue == NULL ) {
816 /* Create a referral list */
817 lc->lconn_rebind_queue =
818 (char ***) LDAP_MALLOC( sizeof(void *) * 2);
820 if( lc->lconn_rebind_queue == NULL) {
821 ld->ld_errno = LDAP_NO_MEMORY;
826 lc->lconn_rebind_queue[0] = refarray;
827 lc->lconn_rebind_queue[1] = NULL;
831 /* Count how many referral arrays we already have */
832 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
836 /* Add the new referral to the list */
837 lc->lconn_rebind_queue = (char ***) LDAP_REALLOC(
838 lc->lconn_rebind_queue, sizeof(void *) * (j + 2));
840 if( lc->lconn_rebind_queue == NULL ) {
841 ld->ld_errno = LDAP_NO_MEMORY;
845 lc->lconn_rebind_queue[j] = refarray;
846 lc->lconn_rebind_queue[j+1] = NULL;
850 /* We have queued the referral/reference, now just return */
853 count = 1; /* Pretend we already followed referral */
857 /* Re-encode the request with the new starting point of the search.
858 * Note: In the future we also need to replace the filter if one
859 * was provided with the search reference
862 /* For references we don't want old dn if new dn empty */
863 if ( sref && srv->lud_dn == NULL ) {
864 srv->lud_dn = LDAP_STRDUP( "" );
867 LDAP_NEXT_MSGID( ld, id );
868 ber = re_encode_request( ld, origreq->lr_ber, id,
869 sref, srv, &rinfo.ri_request );
872 ld->ld_errno = LDAP_ENCODING_ERROR;
878 LDAP_LOG ( OPERATION, DETAIL1,
879 "ldap_chase_v3referrals: msgid %d, url \"%s\"\n",
880 lr->lr_msgid, refarray[i], 0 );
882 Debug( LDAP_DEBUG_TRACE,
883 "ldap_chase_v3referral: msgid %d, url \"%s\"\n",
884 lr->lr_msgid, refarray[i], 0);
887 /* Send the new request to the server - may require a bind */
888 rinfo.ri_msgid = origreq->lr_origid;
889 rinfo.ri_url = refarray[i];
890 #ifdef LDAP_R_COMPILE
891 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
893 rc = ldap_send_server_request( ld, ber, id,
894 origreq, srv, NULL, &rinfo );
895 #ifdef LDAP_R_COMPILE
896 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
899 /* Failure, try next referral in the list */
901 LDAP_LOG ( OPERATION, ERR,
902 "ldap_chase_v3referrals: Unable to chase referral \"%s\" (%s)\n",
903 refarray[i], ldap_err2string( ld->ld_errno ), 0 );
905 Debug( LDAP_DEBUG_ANY, "Unable to chase referral \"%s\" (%s)\n",
906 refarray[i], ldap_err2string( ld->ld_errno ), 0);
908 unfollowedcnt += ldap_append_referral( ld, &unfollowed, refarray[i]);
909 ldap_free_urllist(srv);
912 /* Success, no need to try this referral list further */
917 /* check if there is a queue of referrals that came in during bind */
919 if (( lc = find_connection( ld, srv, 1 )) == NULL ) {
920 ld->ld_errno = LDAP_OPERATIONS_ERROR;
926 if( lc->lconn_rebind_queue != NULL) {
927 /* Release resources of previous list */
928 LDAP_VFREE(refarray);
930 ldap_free_urllist(srv);
933 /* Pull entries off end of queue so list always null terminated */
934 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
937 refarray = lc->lconn_rebind_queue[j-1];
938 lc->lconn_rebind_queue[j-1] = NULL;
939 /* we pulled off last entry from queue, free queue */
941 LDAP_FREE( lc->lconn_rebind_queue);
942 lc->lconn_rebind_queue = NULL;
944 /* restart the loop the with new referral list */
948 break; /* referral followed, break out of for loop */
952 LDAP_VFREE(refarray);
953 ldap_free_urllist(srv);
954 LDAP_FREE( *errstrp );
958 LDAP_FREE( unfollowed );
961 ld->ld_errno = LDAP_REFERRAL;
962 *errstrp = unfollowed;
968 * XXX merging of errors in this routine needs to be improved
971 ldap_chase_referrals( LDAP *ld,
979 char *p, *ref, *unfollowed;
980 LDAPRequest *origreq;
986 LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_referrals\n", 0, 0, 0 );
988 Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
991 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
994 if ( *errstrp == NULL ) {
998 len = strlen( *errstrp );
999 for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
1000 if ( strncasecmp( p, LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
1002 p += LDAP_REF_STR_LEN;
1007 if ( len < LDAP_REF_STR_LEN ) {
1011 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
1013 LDAP_LOG ( OPERATION, ENTRY,
1014 "ldap_chase_referrals: more than %d referral hops (dropping)\n",
1015 ld->ld_refhoplimit, 0, 0 );
1017 Debug( LDAP_DEBUG_ANY,
1018 "more than %d referral hops (dropping)\n",
1019 ld->ld_refhoplimit, 0, 0 );
1021 /* XXX report as error in ld->ld_errno? */
1025 /* find original request */
1026 for ( origreq = lr; origreq->lr_parent != NULL;
1027 origreq = origreq->lr_parent ) {
1034 /* parse out & follow referrals */
1035 for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
1036 if (( p = strchr( ref, '\n' )) != NULL ) {
1042 rc = ldap_url_parse_ext( ref, &srv );
1044 if ( rc != LDAP_URL_SUCCESS ) {
1046 LDAP_LOG ( OPERATION, DETAIL1,
1047 "ldap_chase_referrals: ignoring unknown referral <%s>\n",
1050 Debug( LDAP_DEBUG_TRACE,
1051 "ignoring unknown referral <%s>\n", ref, 0, 0 );
1053 rc = ldap_append_referral( ld, &unfollowed, ref );
1058 if( srv->lud_dn != NULL && srv->lud_dn == '\0' ) {
1059 LDAP_FREE( srv->lud_dn );
1064 LDAP_LOG ( OPERATION, DETAIL1,
1065 "ldap_chase_referrals: chasing LDAP referral <%s>\n", ref, 0, 0 );
1067 Debug( LDAP_DEBUG_TRACE,
1068 "chasing LDAP referral: <%s>\n", ref, 0, 0 );
1073 LDAP_NEXT_MSGID( ld, id );
1074 ber = re_encode_request( ld, origreq->lr_ber,
1075 id, sref, srv, &rinfo.ri_request );
1081 /* copy the complete referral for rebind process */
1082 rinfo.ri_url = LDAP_STRDUP( ref );
1084 rinfo.ri_msgid = origreq->lr_origid;
1086 #ifdef LDAP_R_COMPILE
1087 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
1089 rc = ldap_send_server_request( ld, ber, id,
1090 lr, srv, NULL, &rinfo );
1091 #ifdef LDAP_R_COMPILE
1092 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
1095 LDAP_FREE( rinfo.ri_url );
1101 LDAP_LOG ( OPERATION, ERR,
1102 "ldap_chase_referrals: Unable to chase referral <%s>\n",
1103 ldap_err2string( ld->ld_errno), 0, 0 );
1105 Debug( LDAP_DEBUG_ANY,
1106 "Unable to chase referral (%s)\n",
1107 ldap_err2string( ld->ld_errno ), 0, 0 );
1109 rc = ldap_append_referral( ld, &unfollowed, ref );
1112 ldap_free_urllist(srv);
1115 LDAP_FREE( *errstrp );
1116 *errstrp = unfollowed;
1118 return(( rc == 0 ) ? count : rc );
1123 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
1127 if ( *referralsp == NULL ) {
1129 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
1133 *referralsp = (char *)LDAP_REALLOC( *referralsp,
1134 strlen( *referralsp ) + strlen( s ) + 2 );
1137 if ( *referralsp == NULL ) {
1138 ld->ld_errno = LDAP_NO_MEMORY;
1143 strcpy( *referralsp, LDAP_REF_STR );
1145 strcat( *referralsp, "\n" );
1147 strcat( *referralsp, s );
1155 re_encode_request( LDAP *ld,
1156 BerElement *origber,
1163 * XXX this routine knows way too much about how the lber library works!
1171 BerElement tmpber, *ber;
1176 LDAP_LOG ( OPERATION, ARGS,
1177 "re_encode_request: new msgid %ld, new dn <%s>\n",
1179 ( srv == NULL || srv->lud_dn == NULL ) ? "NONE" : srv->lud_dn, 0 );
1181 Debug( LDAP_DEBUG_TRACE,
1182 "re_encode_request: new msgid %ld, new dn <%s>\n",
1184 ( srv == NULL || srv->lud_dn == NULL) ? "NONE" : srv->lud_dn, 0 );
1190 * all LDAP requests are sequences that start with a message id.
1191 * For all except delete, this is followed by a sequence that is
1192 * tagged with the operation code. For delete, the provided DN
1193 * is not wrapped by a sequence.
1195 rtag = ber_scanf( &tmpber, "{it", /*}*/ &along, &tag );
1197 if ( rtag == LBER_ERROR ) {
1198 ld->ld_errno = LDAP_DECODING_ERROR;
1203 if ( tag == LDAP_REQ_BIND ) {
1204 /* bind requests have a version number before the DN & other stuff */
1205 rtag = ber_scanf( &tmpber, "{ia" /*}*/, &ver, &orig_dn );
1207 } else if ( tag == LDAP_REQ_DELETE ) {
1208 /* delete requests don't have a DN wrapping sequence */
1209 rtag = ber_scanf( &tmpber, "a", &orig_dn );
1211 } else if ( tag == LDAP_REQ_SEARCH ) {
1212 /* search requests need to be re-scope-ed */
1213 rtag = ber_scanf( &tmpber, "{ae" /*"}"*/, &orig_dn, &scope );
1215 if( srv->lud_scope != LDAP_SCOPE_DEFAULT ) {
1216 /* use the scope provided in reference */
1217 scope = srv->lud_scope;
1219 } else if ( sref ) {
1220 /* use scope implied by previous operation
1223 * subtree -> subtree
1224 * subordinate -> subtree
1228 case LDAP_SCOPE_BASE:
1229 case LDAP_SCOPE_ONELEVEL:
1230 scope = LDAP_SCOPE_BASE;
1232 case LDAP_SCOPE_SUBTREE:
1233 #ifdef LDAP_FEATURE_SUBORDINATE_SCOPE
1234 case LDAP_SCOPE_SUBORDINATE:
1236 scope = LDAP_SCOPE_SUBTREE;
1242 rtag = ber_scanf( &tmpber, "{a" /*}*/, &orig_dn );
1245 if( rtag == LBER_ERROR ) {
1246 ld->ld_errno = LDAP_DECODING_ERROR;
1250 if (( ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
1254 if ( srv->lud_dn == NULL ) {
1260 if ( tag == LDAP_REQ_BIND ) {
1261 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, dn );
1262 } else if ( tag == LDAP_REQ_DELETE ) {
1263 rc = ber_printf( ber, "{itsN}", msgid, tag, dn );
1264 } else if ( tag == LDAP_REQ_SEARCH ) {
1265 rc = ber_printf( ber, "{it{se" /*}}*/, msgid, tag, dn, scope );
1267 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, dn );
1270 LDAP_FREE( orig_dn );
1273 ld->ld_errno = LDAP_ENCODING_ERROR;
1278 if ( tag != LDAP_REQ_DELETE && (
1279 ber_write(ber, tmpber.ber_ptr, ( tmpber.ber_end - tmpber.ber_ptr ), 0)
1280 != ( tmpber.ber_end - tmpber.ber_ptr ) ||
1281 ber_printf( ber, /*{{*/ "N}N}" ) == -1 ) )
1283 ld->ld_errno = LDAP_ENCODING_ERROR;
1289 if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
1291 LDAP_LOG ( OPERATION, DETAIL1,
1292 "re_encode_request: new request is:\n", 0, 0, 0 );
1294 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
1297 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
1299 #endif /* LDAP_DEBUG */
1301 *type = tag; /* return request type */
1307 ldap_find_request_by_msgid( LDAP *ld, ber_int_t msgid )
1311 #ifdef LDAP_R_COMPILE
1312 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
1314 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
1315 if( lr->lr_status == LDAP_REQST_COMPLETED ) {
1316 continue; /* Skip completed requests */
1318 if ( msgid == lr->lr_msgid ) {
1322 #ifdef LDAP_R_COMPILE
1323 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );